The dog bike trailer is a great way to maintain an active lifestyle for your small to larger pets. This pet bike trailer can be setup in minutes. To attach the trailer onto your bike you simply attach the bike hitch to your rear wheel then slip the arm onto the hitch and attach the pin and safety strap. The mesh zippered screen on the front and back, and the meshed windows on the side allow for maximum air flow for your pet. To protect your pet from the rain a clear plastic cover is included.